<span>We can define average velocity as,
"the total distance displacement of an object divided by total time taken."
We can say that an object has had displacement if its final position is different from its initial position. Therefore, the formula becomes:
average velocity = total displacement / total time
Keep in mind that displacement is a vector quantity, so it is possible for an object to have covered a distance but if its starting and final positions are the same, then it has had no displacement.</span>
Answer:
Explanation:
Ancient astronomers used the movement of the skies:
1. To track and find out the why's about the movement of our planet and others
2. To come up with systems ex. Egyptions used their monitoring of the celestial bodies to come up with a calendar system, in which they also used it to predict the nile river floodings
3. Religious purposes ex. ancient mayans studied the movement of the skies for their own religion sakes, ex. annual sacrificing of humans blood to their gods
Answer:
The natural satelite Europa and the planet Mars are the two rock systems more likely to earth on their conditions all about solar system. Europa has a huge liquid water ocean and temperature is pretty similar to earth, Mars also has water but it's in solid state and the temperature also is good, not during the nights but still is good enough.
The thermal energy of the water. Because the water is waaay above Absolute Zero (0K, or -273,15 C) it holds thermal energy or aka the temperature of the water. If the temperature of the water is higher than the one in the thermometer, the heat will 'flow' into the liquid (mostly mercury or modern, it is ethanol), causing the liquid to rise since it's volume increases. The same when te water has lower temperature. The thermal energy of the thermometer will 'flow' in the water and the volume shrinks, causing the liquid to go down. Simple thermodynamics.
As the skateboard rolls down the ramp it loses potential energy and gains kinetic energy.
